#include "lib9.h"#include "logfs.h"#include "nandfs.h"#include "nandecc.h"#include "local.h" char *nandfsupdatepage(Nandfs *nandfs, void *buf, ulong path, uchar tag, long block, int page){	uchar tbuf[NandfsFullSize];	ulong ecc1, ecc2;	ulong rawoffset;	NandfsAuxiliary *hdr; 	rawoffset =  (nandfs->baseblock + block) * nandfs->rawblocksize + page * NandfsFullSize;	memmove(tbuf, buf, NandfsPageSize);	ecc1 = nandecc(tbuf);	ecc2 = nandecc(tbuf + 256);	hdr = (NandfsAuxiliary *)(tbuf + NandfsPageSize);	memset(hdr, 0xff, sizeof(*hdr));	hdr->tag = tag;	if (path < NandfsPathMask) {		ulong tmp = _nandfshamming31_26calc(path << 6) | (1 << 5);		putbig4(hdr->parth, tmp);	}	putlittle3(hdr->ecc1, ecc1);	putlittle3(hdr->ecc2, ecc2);	return (*nandfs->write)(nandfs->magic, tbuf, sizeof(tbuf), rawoffset);} char *nandfswritepage(Nandfs *nandfs, void *buf, long block, int page){	ulong writepath = nandfsgetpath(nandfs, block);	uchar writetag = nandfsgettag(nandfs, block);//print("block %ld writepath 0x%.8lux writetag 0x%.2ux\n", block, writepath, writetag);	return nandfsupdatepage(nandfs, buf, writepath, writetag, block, page);}